Electrical insulating sleeve



FIG. 1 is a perspective view of an electrical insulating sleeve showingmy new design;

FIG. 2 is a front elevation view of the design of FIG. 1;

FIG. 3 is a plan view of the design of FIG. 1; and

FIG. 4 is a bottom view of the design of FIG. 1.

The ornamental design for electrical insulating sleeve, as shown.